One item of conspicuous expenditure not listed in this year's review is the cost to the family of the royal wedding at the end of April and is unlikely to be detailed next year either. Sir Michael Peat, the prince's soon-to-retire private secretary, said: "What really counted was the happiness of the occasion. I am not going to say how much money was spent. Obviously the Prince of Wales spent the majority of the costs but I don't think generally people say how much weddings cost, do they?"

So, how has the spending changed? Here's the last two years data mapped using Many Eyes:

Overall, his income is up 4%, having decreased the year before. The key facts are:

• Income from grants-in-aid (voted for by Parliament) and government departments combined rose 17.9% from £1,664,000 to £1,962,000. Separately, grants-in-aid are up 42% and spending from government departments is down 33% (see the tables at the bottom of the page for more details)• Funding from the Duchy of Cornwall – the landed estate given to the heir to the throne – is up by nearly 4% to £17,796,000• His tax bill soared by more than £900,000 last year, rising 26.2% to £4,398,000• Charles and the Duchess of Cornwall travelled 34,000 miles to and from official engagements in 2010/11 - including more than 14,000 miles on overseas trips• Spending on official travel by air and rail came to £1,080,000, up £388,000 or 56% from the previous year

Again, the data was published as a PDF, so we've extracted it for you and you can download it below. What will you do with it?